Washing machine



FIG. 1 is a perspective view of a washing machine, showing our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a side view thereof;

FIG. 5 is another side view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The evenly-dashed broken lines in the drawings illustrate the portions of the washing machine that form no part of the claimed design. 

CLAIM The ornamental design for a washing machine, as shown and described. 